July 12, 2025
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Eryri (Snowdonia) National Park
XTERRA Trail Run World Championship

Snowdonia Trail Marathon Eryri

Open Trail Marathon

RUN 44K
Note
The information on this page is not yet confirmed, and may be based on the previous years' edition.

XTERRA Snowdonia Trail Marathon Eryri Open Trail Marathon is the ultimate distance for experienced runners in love with endurance trail running across any terrain or mountain. Compete for the satisfaction of conquering the trail and earning your slot for the XTERRA Trail Run World Championship.

Registration opens on
Aug 23
Registration Closes on
Jul 11
Registration Closed

COURSE MAPS

This courses below are not yet confirmed, and subject to change.
Run course
Ascending 1,685 metres over 27 miles of trails, this epic race climb Wales' highest peak - Snowdon
Close
Probably the biggest trail marathon in the UK, the Snowdonia Trail Marathon is a challenge in every sense of the word. Ascending 1,685 metres over 27 miles of iconic and spectacular trails, this epic race will circumnavigate and eventually climb Wales' highest peak - Snowdon. The incredible route explores the trails, gorgeous panoramic views and tough climbs that make Snowdonia National Park such a mecca for outdoor enthusiasts. Visiting Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass and Snowdon (via the PyG Track to the Finger Stone) to then descend to the Finish Line via the Llanberis Path, there surely can't be a more striking trail marathon route in the UK!

sChedule

This schedule is not yet confirmed, and subject to change.
1
Fri 2025.07.11
+
2
Sat 2025.07.12
+

prizes

This information is not yet confirmed, and subject to change.

116

TRWC Slots

Eco Medal

Welsh Slate Finisher Memento

Trail Run World Championship Slots Men & Women

DIVISION SLOTS

15-19

2

20-24

4

25-29

4

30-34

6

35-39

6

DIVISION SLOTS

40-44

6

45-49

6

50-54

6

55-59

4

60-64

4

DIVISION SLOTS

65-69

4

70-74

2

75-79

2

80+

2

Trail Run World Championship Slots Men & Women

DIVISION SLOTS

15-19

2

20-24

4

25-29

4

30-34

6

35-39

6

40-44

6

45-49

6

DIVISION SLOTS

50-54

6

55-59

4

60-64

4

65-69

4

70-74

2

75-79

2

80+

2

Slots indicated apply equally to male and female divisions. See the complete rules here.

We hold a prize-giving ceremony after the racing, approximate timings will be detailed in the Final Instructions however it is a good idea to listen out for information on any updates that come in over the tannoy. Sometimes the ceremony may be delayed and we wouldn't want you to miss out. We don't send out prizes after the event, so make sure you attend the ceremony and receive your big Welsh cheer!

Prize Categories for the Snowdonia Ultra Trail Marathon are (for both men and women)

Overall: Top 3*

Senior: 1st Runner

V40: 1st Runner

V50: 1st runner

V60: 1st runner

V70: 1st runner

All prizes must be collected on the day.

* If any runner places in Overall and a category, then a drop-down system will occur.

FEES

The fees below have not yet been confirmed, and are subject to change.
Registration from Aug 23rd, 2024 - Jul 10th, 2025.

RACE FEES

Description Fee
Early Bird - Tier 1 £ 51.99
Tier 2 £57.99
Tier 3 £59.99
Late Entries - Tier 4 £61.99

If you opted for a postal entry there is no need to register in person before the event. Your Final Instructions will be printed on the back of your bib, and they will also be available on the website 10 days prior to the race.

If your bib is not being posted you will need to collect it from registration. Registration will take place on Saturday afternoon and before the race on Sunday morning. We will confirm specific times in your Final Instructions, which will be available on the website and via email 10 days prior to the race.

Registration is usually located on the event field in Llanberis situated next to the Community Centre - LL55 4UR

RULES & INFO

The information below may be from a previous edition of the event, and is subject to change.

Minimum age: 18

CUT-OFF TIMES:

11:20 - Mile 11.5 (18.5km) - Cut off at Beddgelert

14:15 - Mile 19.6 (31.5km) - Cut off at Pen y Pass

18:00 - Mile 27.4 (44km) - Finish line Cut Off

FEED STATIONS:

There are 5 aid stations on the Marathon route, plus an emergency water station.

Water and High 5 energy drink and gels will be available at 2, 6, 11, 15 and 19 miles.

At 11 miles (Beddgelert) and 19 miles (Pen y Pass), there will also be fruit, crisps and sweets.

There will be an emergency water station at mile 23 (Clogwyn Station). Due to the difficulty of supplying water containers high on Yr Wyddfa (Snowdon), there will be limited supply here. Please ensure that you have filled your water bottles at the Pen y Pass aid station, and only take water at this station if absolutely necessary. We are unable to re-fill water containers at this point.

COMPULSORY KIT:

All competitors must carry the compulsory kit listed below. This kit is for your safety due to the often unpredictable and quickly changing mountain conditions and isolated nature of the route.

Spot checks will be in place and anybody found without the required kit will not be allowed to race.

  • Waterproof jacket & trousers - with taped seams and integrated attached hood.

  • Suitable off-road running shoes - fell/trail shoes

  • Hat and Gloves (head and hand cover)

  • Whistle

  • Emergency food

  • Foil blanket

  • Drinking water

  • Mobile telephone

ADDITIONAL PERMITTED / ADVISORY KIT:

  • GPS device (watch with route downloaded)

  • Extra long-sleeved warm layer

  • Compass & map (If you know how to use them)

  • Poles (we permit people to use poles)

  • Suntan lotion

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